Isoflux, Flat-Top, and Pencil-Beam Pattern Reconfigurable Circularly Polarized Antenna Using Liquid Dielectric

IF 4.6 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2025-02-06 DOI:10.1109/TAP.2025.3537289

Xue Ren;Zhiwei Lin;Zhe Chen;Hang Wong

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Abstract

This communication proposes a radiation pattern reconfigurable circularly polarized antenna based on liquid dielectric. The antenna consists of a circularly polarized feeding antenna and a 3-D-printed dielectric container. By filling three independent cavities inside the 3-D-printed container with liquid dielectric, the antenna can achieve switching between isoflux beam, flat-top beam, and pencil-beam by controlling the aperture field distribution of the antenna. To demonstrate this idea, the proposed antenna is fabricated and measured. The measured results are in good agreement with the simulation one. In the mode of isoflux beam, the coverage area is around 70°. In the flat-top radiation pattern mode, the flatness is better than 1 dB within the beamwidth of ±38°, and the maximum gain of the pencil-beam mode is 10.7 dBic. The measured results indicate that the liquid antenna has the function of reconfigurable radiation pattern and has good electrical performance, simple structure, and low manufacturing cost, making it a great potential in diversified communication environments.

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采用液体介质的等通量、平顶和铅笔波束模式可重构圆极化天线

该通信提出了一种基于液体介质的辐射方向图可重构圆极化天线。该天线由圆极化馈电天线和三维打印介质容器组成。通过在三维打印容器内填充液体介质，控制天线的孔径场分布，实现等通量波束、平顶波束和铅笔波束之间的切换。为了证明这一想法，所提出的天线制作和测量。实测结果与仿真结果吻合较好。在等流光束模式下，覆盖面积约为70°。在平顶辐射方向图模式下，在波束宽度±38°范围内平整度优于1 dB，铅笔束模式的最大增益为10.7 dBic。测量结果表明，液体天线具有可重构辐射方向图的功能，电性能好，结构简单，制造成本低，在多种通信环境中具有很大的应用潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Antennas and Propagation 工程技术-电信学

CiteScore

10.40

自引率

28.10%

发文量

968

审稿时长

4.7 months

期刊介绍： IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques